生物炭
磷酸
吸附
废水
城市固体废物
废物管理
制浆造纸工业
资源回收
化学
环境科学
环境工程
热解
有机化学
工程类
作者
Shoichi Kai,Guotao Hu,Tianxiang Zhao,Huinan Dong,Yi Yang,Hongyan Pan,Qian Lin
出处
期刊:Chemosphere
[Elsevier]
日期:2024-02-01
卷期号:349: 140877-140877
被引量:2
标识
DOI:10.1016/j.chemosphere.2023.140877
摘要
Solid waste and heavy metal pollution are long-term and challenging subjects in the field of environmental engineering. In this study, we propose a sustainable approach to “treating waste with waste” by utilizing the ultramicropore biochar derived from solid waste distiller’s grains as a means to remove Cr(VI) from simulated wastewater and wet phosphoric acid. The biochar prepared in this research exhibit extremely high specific surface areas (up to 2973 m2/g) and a well-developed pore structure, resulting in a maximum Cr(VI) adsorption capacity of 426.0 mg/g and over 99% removal efficiency of Cr(VI). Furthermore, the adsorbent can be reused for up to eight cycles without significant reduction in its Cr(VI) adsorption performance. Mechanistic investigations suggest that the exceptional Cr(VI) adsorption capacity can be attributed to the synergistic effect of electrostatic interaction and reduction adsorption. This study offers an alternative approach for the resource utilization of solid waste distiller’s grains, and the prepared biochar holds promise for the removal of Cr(VI) from wastewater and wet-process phosphoric acid.
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